Medically reviewed by Dr. Rob Letizia, PT, DPT — owner, Spectrum Therapeutics of NJ. Last reviewed 2026-08-12.

Should I Rest It or Move It?

The short answer

For most injuries, past the first day or two, movement beats rest — but the honest answer is that it depends on which tissue is hurt, and for one tissue the answer is the exact opposite.

• Nerve pain (sciatica, a pinched nerve) — move. Gentle, frequent movement generally does better than lying still, and prolonged bed rest tends to make it worse.
• Tendon pain (Achilles, tennis elbow, rotator cuff) — load it. This surprises people. Rest lowers a tendon's tolerance, so it feels better while you rest and hurts again the moment you return. Progressive, heavy, slow strengthening is the best-supported treatment.
• Muscle strain — brief protection, then early gentle movement and progressive load.
• Bone stress (a stress reaction or stress fracture) — stop. This is the one where backing off genuinely is the treatment, and pushing through can turn a stress reaction into a full fracture.
• Joint swelling that keeps returning — that is the joint telling you the current load is too much, whatever the tissue.

So “rest or move?” is not quite the right question. The useful question is how much load, and how do I know if it was too much?

Relative rest: the idea that replaced complete rest

Complete rest was standard advice for a long time and it is no longer what the evidence supports. Beyond the first 24 to 72 hours, prolonged immobility costs you strength, range and confidence, and it does not speed tissue repair.

Relative rest means unloading the injured part while keeping the rest of you moving. In practice:

• Change the variable, not the whole activity. A runner with an irritable knee usually does better cutting distance while keeping frequency than stopping altogether for two weeks and restarting cold.
• Keep training around it. An injured shoulder is not a reason to stop training legs. Deconditioning is a real cost and it is the one nobody warns you about.
• Find the version that does not hurt — shorter range, less weight, slower tempo, flat ground instead of hills — and work there.

The 24-Hour Rule

This is the practical test, and it is the thing worth taking away from this page. Judge the load by how you are the next morning, not by how it felt at the time.

• Pain during the activity that stays mild and settles quickly afterwards is generally acceptable. Rehab is often not completely pain-free, particularly for tendons.
• Back to your normal baseline by the next morning — the load was right. You can keep it, and progress it soon.
• Still worse the next morning — the load was too much. Reduce it, do not abandon it. Drop the weight, the distance, or the range, and rebuild from there.
• Worse for several days after a single session — that is well past a flare. Get it looked at rather than repeating it.
• Pain that makes you limp or changes how you move is too much regardless of how it scores. Movement quality is the limit, not the pain number.

Two sessions is usually enough to calibrate. Most people are not doing too much or too little consistently — they alternate, resting until it feels better and then doing a full session, which is the pattern that keeps a tendon irritable for months.

When the answer is neither rest nor movement

These need assessment, not a load decision:

• Focal tenderness on bone, pain when hopping on that leg, or pain that has begun to hurt while walking or at night — possible bone stress. Stop and get imaged.
• Bladder or bowel changes, numbness around the saddle area, or weakness in both legs alongside back pain — emergency, go to hospital now.
• Progressive weakness — a limb that is genuinely getting weaker rather than just sore.
• Calf pain or swelling on one side, warm or discoloured skin, particularly after surgery or a long flight — possible clot.
• Fever, night sweats, unexplained weight loss, or pain that is unrelated to position and activity.
• A joint that locks, gives way, or swells hard and fast after a specific incident.

Asked an AI assistant this question?

It is one of the most common things people now put to ChatGPT, Gemini, or Claude, usually at 11pm two days into something sore. The general answer — keep moving, avoid complete rest — is broadly right, and it is where we would start too.

The gap is that the correct answer inverts depending on which tissue is involved, and an assistant cannot examine you to find out which one it is. Told “the outside of my knee hurts when I run,” it will reasonably suggest keeping moving. If that pain is bone stress rather than a tendon, keeping moving is the one thing that makes it materially worse.

We can tell those apart in a visit: hands on the bone, watching you move, testing one side against the other. Bring whatever plan you have been following — we will tell you which tissue you are dealing with and how much load it actually wants.

Book an evaluation in Wayne, NJ · call or text (973) 689-7123.

Where this applies

• What actually makes you heal faster — why each tissue has its own clock
• IT band pain in runners — a case where load, not rolling, is the fix
• Knee tightness after meniscus surgery — load rules differ by which operation you had
• ACL recovery — where progression is earned by testing, not by the calendar